日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

您現在的位置: Language Tips> Audio & Video> Special Speed News  
   
 





 
Bringing color to life with natural dyes
[ 2008-11-10 11:06 ]

Download

 

This is the VOA Special English Development Report.

Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So this week, we describe a natural way to dye wool.

The advice comes from information written by Jenny Dean of the Intermediate Technology Development Group in Britain. This anti-poverty group is now called Practical Action.

Dyed Wool There are several methods to put dye onto material. The vat method, for example, can be used to dye wool with onionskins. For this example, use one hundred grams of natural wool. The wool must be clean. Leave it overnight in water and liquid soap. Then wash it with clean water that is a little warm. Gently squeeze out the extra water.

A solution called a mordant is used in the dying process. A mordant helps fix the dye to the material. Traditionally, mordants were found in nature. Wood ash is one example. But chemical mordants such as alum are popular today. Alum is sold in many stores. It is often mixed with cream of tartar, a fine powder commonly used in cooking.

Mix eight grams of alum with seven grams of cream of tartar in a small amount of hot water. Add the solution to a metal pan of cool water. Next, add the wool and place the mixture over heat. Slowly bring the liquid to eighty-two degrees Celsius. Heat the mixture for forty-five minutes. After it cools, remove the wool and wash it.

To prepare the dye solution, cover thirty grams of onionskins with water. Use only the dry, brown outer skins. Boil the liquid until the onionskins lose their color, about forty-five minutes,. Remove the skins after the dye cools.

Now it is time to dye the wool. Place the wool into the dye and heat the mixture. Bring it to a boil, then immediately reduce the heat to eighty-two degrees. Now heat the dye for about forty-five minutes or until the wool is the desired color. Keep in mind that wet wool looks darker than it is.

Once the dye cools, remove the wool and wash it. Now the wool is orange or yellow. Or at least it should be.

Internet users can get the full details at practicalaction, one word, dot o-r-g. Again, the address is practicalaction dot org. And enter the word "dye," d-y-e, in the search box. We will post a link to the site at voaspecialenglish.com.

And that's the VOA Special English Development Report, written by Jill Moss. I'm Steve Ember.

(Source: VOA 英語點津姍姍編輯)

 
英語點津版權說明:凡注明來源為“英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
Walking in the US first lady's shoes
“準確無誤”如何表達
英國新晉超女蘇珊大媽改頭換面
豬流感 swine flu
你有lottery mentality嗎
翻吧推薦
 
論壇熱貼
 
別亂扔垃圾。怎么譯這個亂字呀?
橘子,橙子用英文怎么區分?
看Gossip Girl學英語
端午節怎么翻譯?
母親,您在天堂還好嗎?

 

主站蜘蛛池模板: 国产精品网站在线观看 | 欧美另类v | 国产免费黄 | 久草手机在线 | 91黄色小视频| 国产福利第一页 | 播播激情网 | 欧美啪啪网站 | 国产原创麻豆 | 国产精品久久免费 | 国产微拍一区 | 国产激情网址 | 青青青久久久 | 97国产在线 | 一道本av| 亚洲女同一区二区 | 日本一本久草 | 在线视频日韩精品 | 久久精品在线 | 爱爱的免费视频 | 国产精品久久毛片 | www.天天色| 欧美日韩高清在线观看 | 天堂网在线视频 | www.色网| 黄网站在线免费看 | 香蕉久久久久 | 亚洲精品小视频 | 日本国产在线观看 | 白天操晚上操天天操 | 亚洲精品少妇久久久久久 | 欧美色综合天天久久综合精品 | 长河落日电视连续剧免费观看01 | 中文字幕网站 | 男女嘿咻动态图 | 成人午夜免费在线观看 | 日韩免费久久 | 91动漫免费网站 | 亚洲成人黄色av | 亚洲国产91| 欧美三级午夜理伦 |